CN115895116A - Regenerated PP glass fiber material for enameled wire spool material and preparation method thereof - Google Patents
Regenerated PP glass fiber material for enameled wire spool material and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of PP materials, in particular to a regenerated PP glass fiber material for an enameled wire bobbin material and a preparation method thereof. The mechanical properties such as the hardness of the spool can be improved by using the regenerated PP glass fiber material to manufacture the spool finished product, and the stability of the spool quality is ensured; the material is not easy to warp and deform (the inner part is sunken), is not easy to break and has good batch stability; the shrinkage rate is low, the eccentricity is low, and the technical problem that the finished spool product floats up and down in the using process is solved.
Description
Technical Field
The invention relates to the technical field of PP (polypropylene) materials, in particular to a regenerated PP glass fiber material for an enameled wire spool material and a preparation method thereof.
Background
At present, the recycled HIPS mainly made of materials adopted in the enameled wire bobbin industry is mainly low in price, wide in source and simple and widely used in processing technology. However, because the existing screening and separating technology is limited, the HIPS reclaimed material is poor in quality, particularly low in hardness and poor in impact property due to the fact that the HIPS reclaimed material is aged and is doped with other reclaimed plastics or metal substances in the recycling process, the quality of the finished spool product is unstable in batches, the problems of warping deformation, line blocking and the like in the using process are easily caused, and normal use is affected.
In conclusion, the enameled wire bobbin made of recycled materials in the industry has the following defects: 1. the mechanical properties such as hardness, impact property and the like of the finished spool product are poor; 2. the finished spool product is easy to generate buckling deformation (internal depression), stress whitening, fracture and poor batch stability; 3. in the winding process of the finished spool, the upper part and the lower part are not concentric due to the difference of the shrinkage rates of materials, and the spool fluctuates up and down in the winding process due to large eccentricity.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a preparation method of a recycled PP glass fiber material for an enameled wire shaft material.
The technical scheme adopted by the invention for solving the technical problems is as follows: a regenerated PP glass fiber material for an enameled wire bobbin material is prepared from preparation raw materials, wherein the preparation raw materials comprise PP recycled materials, a reinforcing agent, a toughening agent, white oil, carbon black, an antioxidant and glass fibers.
As a further improvement of the invention: the mass fraction of each component in the raw materials for preparation is as follows: 67 parts by mass of the PP recycled material, 5 parts by mass of the reinforcing agent, 4 or 5 parts by mass of the toughening agent, 1 or 2 parts by mass of the white oil, 1 or 2 parts by mass of the carbon black, 1 part by mass of the antioxidant and 30 parts by mass of the glass fiber.
As a further improvement of the invention: the toughening agent is POE or SBS.
As a further improvement of the invention: the reinforcing agent is barium sulfate, talcum powder or calcium carbonate.
As a further improvement of the invention: the glass fibers are alkali-free continuous glass fibers.
As a further improvement of the invention: the antioxidant is antioxidant 168, antioxidant 1010 or antioxidant 1076.
As a further improvement of the invention: the white oil is 42# white oil or 32# white oil.
The invention further relates to a preparation method of the regenerated PP glass fiber material for the enameled wire shaft material, which is characterized in that the preparation raw materials are added into screw extrusion equipment and uniformly mixed to prepare the regenerated PP glass fiber material.
As a further improvement of the invention: the temperature of each temperature zone of the screw extrusion apparatus was set to 170 ℃ to 195 ℃.
As a further improvement of the invention: the feeding speed of the screw extrusion equipment is set to be 13r/min to 18r/min, the rotating speed of a main machine is 250r/min to 300r/min, and the grain cutting speed is 350r/min.
Compared with the prior art, the invention has the beneficial effects that:
1. the mechanical properties such as hardness of the spool can be improved by using the regenerated PP glass fiber material to manufacture the spool finished product, and the stability of the spool quality is ensured;
2. the finished spool product made of the recycled PP glass fiber material is not easy to warp and deform (has concave interior), is not easy to break and has good batch stability;
3. the finished product of the bobbin made of the recycled PP glass fiber material has low shrinkage rate and low eccentricity, and the technical problem that the finished product of the bobbin floats up and down in the using process is solved.
Drawings
FIG. 1 is a production process flow of a recycled PP glass fiber material.
Figure 2 is a production process flow of the finished bobbin product.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of the present invention and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention will now be further described with reference to the accompanying description and examples:
detailed description of the invention:
a regenerated PP glass fiber material for an enameled wire bobbin material is prepared from preparation raw materials, wherein the preparation raw materials comprise PP recycled materials, a reinforcing agent, a toughening agent, white oil, carbon black, an antioxidant and glass fibers.
Further, the mass fractions of the components in the raw materials for preparation are as follows: 67 parts by mass of the PP recycled material, 5 parts by mass of the reinforcing agent, 4 or 5 parts by mass of the toughening agent, 1 or 2 parts by mass of the white oil, 1 or 2 parts by mass of the carbon black, 1 part by mass of the antioxidant and 30 parts by mass of the glass fiber.
Further, the toughening agent is POE or SBS. The toughening agent is used for increasing the flexibility of the adhesive film layer. PP is one of five common plastics, but has the defects of high molding shrinkage, easy warping and deformation and the like, and limits the application of PP in structural materials and engineering plastics.
PP and POE are elastomer toughening PP systems developed in recent years, have the best toughening effect, good weather resistance, good fluidity, good thermal stability and good processability, and are also the most common elastomer toughening PP systems at present. POE is taken as a toughening agent to toughen and modify a system, so that the composite material obtains various balanced mechanical properties, and the application space of PP is expanded.
The compatibility of POE and PP is very good, and the toughening effect, especially the low temperature toughening effect is very obvious, is superior to EPDM, EPR, and its toughening effect is POE > EPDM > EPR, and flexural modulus and tensile strength decline range is little, and its descending order is that POE < EPDM < EPR. When the adding amount of POE in PP exceeds 15%, the toughening effect is rapidly improved. The notched impact strength increased from 76.4J/m to 626J/m for pure PP when 30% POE was added to PP. Compared with EPDM (ethylene-propylene-diene monomer), POE (polyolefin elastomer) has low cohesive energy, does not contain double bonds, has good weather resistance and is a powerful substitute of EPDM.
SBS has less toughening effect on PP than EPDM, but can be used in general applications. Research shows that when the content of SBS is between 0-10%, the impact strength increases with the addition; when the content exceeds 15%, the impact strength is rather lowered. The normal temperature and low temperature impact performance of the impact-resistant PP prepared from SBS and PP can be respectively improved by 5 times and 10 times.
Further, the reinforcing agent is barium sulfate, talcum powder or calcium carbonate. The reinforcing agent is used for improving the mechanical property of PP.
Barium sulfate can improve the glossiness, the surface hardness and the scratch resistance of the PP surface and make the PP surface more stable in chemical property.
The talcum powder can improve the rigidity, the dimensional stability and the heat-resisting temperature of the PP and has the function of promoting the nucleation of the PP.
Calcium carbonate can improve the dimensional stability, hardness and rigidity of plastic products.
Further, the glass fiber has the following functions in preparing the regenerated PP glass fiber material:
1. the rigidity and hardness are enhanced, the strength and rigidity of the plastic can be improved by adding the glass fiber, but the toughness of the plastic is reduced;
2. the heat resistance and the heat distortion temperature are improved; for example, nylon with glass fiber is added, the thermal deformation temperature is increased by at least two times, and the temperature resistance of common glass fiber reinforced nylon can reach more than 220 ℃;
3. the dimensional stability is improved, and the shrinkage rate is reduced;
4. the warping deformation is reduced;
5. creep is reduced;
6. the flame retardant performance can interfere with a flame retardant system due to the candle wick effect, and the flame retardant effect is influenced;
7. reducing the gloss of the surface;
8. increasing the hygroscopicity.
Further, the glass fiber is an alkali-free continuous glass fiber.
Glass fibers are classified by alkalinity and roughly into three categories: alkali-free glass fibers, medium-alkali glass fibers and high-alkali glass.
The alkali-free glass fiber has R2O content less than 0.8%, is an aluminoborosilicate component, and has good chemical stability, electrical insulation performance and strength. The method is mainly used for manufacturing electric insulating materials, glass fiber reinforced plastic reinforcing materials, tire cords and composite cable supports.
The medium alkali glass fiber has R2O content of 11.9-12.4%, is one kind of soda-lime-silicate component, and has high alkali content, high chemical stability and high strength. The method is generally used for manufacturing latex cloth, a checkered cloth substrate, acid filter cloth, a window screening substrate and the like, and can also be used for manufacturing glass fiber reinforced plastic reinforcing materials with low strict requirements on electrical property and strength.
The content of R2O of the high-alkali glass fiber is more than 15 percent, and the defects of low strength and poor water resistance and alkali resistance can not be overcome, so the effect of the high-alkali glass fiber used as a reinforced product is poor.
The glass fiber is alkali-free, so that the chemical stability, the electrical insulation performance and the strength of the regenerated PP glass fiber material can be effectively improved.
Glass fibers are classified according to production methods and roughly classified into two categories: one is to directly make molten glass into fibers; one is to make molten glass into glass balls or rods with the diameter of 20mm, and then to heat and re-melt the glass balls or rods in various ways to make into very fine fibers with the diameter of 3-80 μm. An infinitely long fiber drawn by a mechanical drawing process through a platinum alloy sheet is known as a continuous glass fiber, commonly known as a long fiber. Discontinuous fibers, made by rollers or air jets, are known as staple glass fibers, commonly referred to as staple fibers.
The brittleness of the material is directly influenced by the length of the glass fiber. Staple glass fibers can reduce impact strength and continuous glass fibers can increase impact strength. To improve the impact strength of the material, continuous glass fibers are selected.
Multiple strands of the glass fibers may be used to ensure a feedable rate.
Further, the antioxidant is antioxidant 168, antioxidant 1010 or antioxidant 1076. The antioxidant is used for improving the stability of the product and prolonging the service life of the product.
The antioxidant 168 is a phosphite antioxidant with excellent performance, has strong extraction resistance and stable hydrolysis, can obviously improve the light stability of products, can effectively prevent the thermal degradation of polypropylene and polyethylene in basic injection molding, and provides extra long-term protection for polymers. The antioxidant 168 has no coloration, no pollution, and good volatility resistance, and can be used for polyethylene, polypropylene, polystyrene, polyester, polyamide, and other products, and polyolefin, styrene homopolymer and copolymer, elastomer, adhesive, engineering plastic (such as PE, PP, PVC, PS, polyamide, polycarbonate, ABS), and other polymer materials.
The antioxidant 1010 is a phenol antioxidant, is one of excellent varieties of antioxidants, has excellent antioxidant performance on polypropylene and polyethylene, can effectively prolong the service life of products, and has the advantages of low volatility, good extraction resistance, high thermal stability, long lasting effect, no coloring, no pollution and no toxicity. It is widely used in olefin resins such as polyethylene, polypropylene, polyurethane, polyoxymethylene, ABS resin, polyvinyl acetal, synthetic rubber and petroleum products.
The antioxidant 1076 has no pollution, good heat resistance and water extraction resistance, basically no toxicity, can effectively inhibit the thermal degradation and oxidative degradation of polymers, and is widely used in polyethylene, polypropylene, polyformaldehyde, ABS resin, polystyrene, polyvinyl chloride, engineering plastics, synthetic rubber and petroleum products.
Further, the white oil is 42# white oil or 32# white oil. White oil, also known as paraffin oil, white oil and mineral oil, is a mixture of refined liquid hydrocarbons obtained from petroleum, and has the function of enabling other additives to be uniformly adhered to the surface of a raw material so as to prevent the other additives from agglomerating in a mixed material. The white oil belongs to inert organic micromolecules and does not participate in the reaction between plastic modification aids, but has certain influence on the performance due to small molecular weight.
The number of the white oil is named by the kinematic viscosity, the kinematic viscosity of the 42# oil is about 32, the kinematic viscosity of the 32# white oil is about 32, generally speaking, the kinematic viscosity of the white oil is about what the number of the white oil is, and the higher the number of the white oil is, the poorer the fluidity is, and the higher the purity is.
Further, the carbon black mainly plays roles of ultraviolet resistance, aging resistance, electric conduction and the like in plastics.
Further, the carbon black may be antistatic general-purpose carbon black or conductive carbon black. The antistatic universal carbon black utilizes the characteristics of carbon black that the carbon black has conductivity and high structural property, irregular aggregate and very small size, is easy to mix with other materials, and the like, and can form a three-dimensional net-shaped conductive path in the raw materials, so that the product has a conductive function under the action of the conductive carbon black, and the PP material has antistatic and conductive capabilities. The conductive carbon black can be PP with stable conductivity, good toughness, strong fluidity, high rigidity, chemical resistance and other properties.
A preparation method of a regenerated PP glass fiber material for an enameled wire bobbin material is characterized in that the preparation raw materials are added into a screw extrusion device and uniformly mixed to prepare the regenerated PP glass fiber material.
Furthermore, the reinforcing agent, the toughening agent, the carbon black and the antioxidant are used as modification aids and are fed together with PP return materials from a normal feeding port, the glass fibers are fed separately from a side feeding port of the spiral basic device, and the white oil can be used as the modification aids and is fed together with the PP return materials or is fed separately.
Further, the temperatures of the respective temperature zones of the screw extrusion device are set to 170 ℃ to 195 ℃.
Furthermore, the screw extrusion equipment is provided with five sections, namely a feeding section, a melting section, a rubber mixing section, a homogenizing section and a machine head section from blanking to discharging in sequence. The feeding section, the melting section, the rubber mixing section, the homogenizing section and the machine head section are respectively provided with a plurality of temperature areas.
Further, the temperature of the screw extrusion equipment from the feeding section to the machine head section is 170 ℃, 180 ℃, 185 ℃, 190 ℃, 180 ℃, 170 ℃, 180 ℃, 195 ℃ and 190 ℃ in sequence.
Further, the feeding section is provided with 2 temperature zones corresponding to 170 ℃ and 180 ℃, the melting section is provided with 2 temperature zones corresponding to 185 ℃ and 190 ℃, the rubber mixing section is provided with 2 temperature zones corresponding to 190 ℃ and 180 ℃, the homogenizing section is provided with 2 temperature zones corresponding to 170 ℃ and 180 ℃, and the machine head section is provided with 2 temperature zones corresponding to 195 ℃ and 190 ℃.
Further, the feeding section is provided with 2 temperature zones corresponding to 170 ℃ and 180 ℃, the melting section is provided with 2 temperature zones corresponding to 185 ℃ and 190 ℃, the rubber mixing section is provided with 3 temperature zones corresponding to 190 ℃, 180 ℃ and 170 ℃, the homogenizing section is provided with 2 temperature zones corresponding to 180 ℃ and 195 ℃, and the machine head section is provided with 1 temperature zone corresponding to 190 ℃.
Further, the feeding speed of the screw extrusion equipment is set to be 13r/min to 18r/min, the rotating speed of a main machine is set to be 250r/min to 300r/min, and the granulating speed is set to be 350r/min.
Further, the feeding rate of the screw extrusion device can be set to be 13, 16r/min or 18r/min, and the rotating speed of the main machine can be set to be 250r/min, 280r/min or 300r/min.
Further, the recycled PP glass fiber material extruded from the screw extrusion equipment is subjected to water cooling and air cooling treatment. Drawing the regenerated PP glass fiber material extruded from the head section into a water tank for water cooling, namely water passing, wherein the water passing length can be 2m, drawing the material to a granulator for granulation after water cooling, carrying out air cooling in the process of drawing the material to the granulator, drying and packaging after granulation.
Further, before the produced recycled PP glass fiber material is used for manufacturing the enameled wire spool, the recycled PP glass fiber material is tested, and the process flow is as follows:
1. the method comprises the following steps of (1) sampling a regenerated PP glass fiber material according to injection molding production to prepare a sample;
2. the samples were tested as follows: the tensile strength was measured according to ISO 527-2-1996, with the tensile speed set at 50mm/min; the bending strength is tested according to ISO 178-2003, and the testing speed is set to be 2mm/min; the impact strength of the simply supported beam is tested according to ISO 179-1-2006; the heat distortion temperature is tested according to ISO 75-2-2004; melt index was tested according to ISO 1133; hardness according to ISO 75-1:2004 test;
3. and if the performance of the sample is more than or less than 5% of the requirement, judging that the quality of the regenerated PP glass fiber material is qualified, and using the regenerated PP glass fiber material to produce products.
Further, the production method using the regenerated PP glass fiber material comprises the following steps
1. Drying the regenerated PP glass fiber material for 1.5h at 100 ℃;
2. conveying the dried regenerated PP glass fiber material into an injection molding machine through material pumping equipment, performing melt injection molding on the material into a mold, and respectively performing injection molding on the material into a bobbin bottom part and a handle part; wherein the injection molding temperature is between 185 ℃ and 205 ℃;
3. and carrying out ultrasonic welding on the handle piece and the spool piece at the welding power of about 2000W to form a complete finished spool product.
Further, in the injection molding machine, there are 6 temperature zones provided from the injection melting to the injection mold, and the temperatures in the 6 temperature zones are 190 ℃, 205 ℃, 200 ℃, 190 ℃ and 180 ℃ in order from the injection melting to the injection mold.
Further, the area for injection molding and melting is divided into 2 sections, namely a melting and plasticizing section and a pressure injection section, wherein the melting and plasticizing section corresponds to the first 5 temperature areas (190 ℃, 205 ℃, 200 ℃ and 190 ℃) and the pressure injection section corresponds to the last 1 temperature area (180 ℃).
Further, after the finished bobbin product is manufactured, the shrinkage rate, the density, the tensile strength, the eccentricity and the weldability of the finished bobbin product are checked, and the quality of the finished bobbin product is judged to be qualified if the performance of the finished bobbin product is more than or less than 5% of the requirement.
The first embodiment is as follows:
a regenerated PP glass fiber material for an enameled wire bobbin material is prepared from preparation raw materials, wherein the preparation raw materials comprise 67 parts by mass of PP recycled material, 5 parts by mass of talcum powder, 5 parts by mass of toughening agent SBS, 1 part by mass of No. 32 white oil, 1 part by mass of carbon black, 1 part by mass of antioxidant 1010 and 30 parts by mass of two strands of alkali-free continuous glass fibers.
In the embodiment, a screw extrusion device is provided with five sections, namely a feeding section, a melting section, a rubber mixing section, a homogenizing section and a machine head section in sequence from feeding to discharging, wherein the five sections of the feeding section, the melting section, the rubber mixing section, the homogenizing section and the machine head section are respectively provided with 2 temperature zones, the temperature of the screw extrusion device from the feeding section to the machine head section is 170 ℃, 180 ℃, 185 ℃, 190 ℃, 180 ℃, 170 ℃, 180 ℃, 195 ℃ and 190 ℃, the feeding section corresponds to 170 ℃ and 180 ℃, the melting section corresponds to 185 ℃ and 190 ℃, the rubber mixing section corresponds to 190 ℃ and 180 ℃, the homogenizing section corresponds to 170 ℃ and 180 ℃, the machine head section corresponds to 195 ℃ and 190 ℃, the feeding speed of the screw extrusion device is set to 16r/min, the rotating speed of a main machine is set to 280r/min, the dicing speed is set to 350r/min, the prepared raw materials are added into the screw extrusion device and are subjected to water cooling, mixed, dried, and packaged into a water cooling and pelletizing machine, and the PP glass fiber is uniformly extruded, and the prepared materials are subjected to a water-cooling and packaged.
A test is carried out after a regenerated PP glass fiber material for an enameled wire spool material is prepared, and the process flow is as follows:
1. the method comprises the following steps of (1) sampling a regenerated PP glass fiber material according to injection molding production to prepare a sample;
2. the samples were tested as follows: the tensile strength is tested according to ISO 527-2-1996, and the tensile speed is set to be 50mm/min; the bending strength is tested according to ISO 178-2003, and the testing speed is set to be 2mm/min; the impact strength of the simply supported beam is tested according to ISO 179-1-2006; the heat distortion temperature is tested according to ISO 75-2-2004; melt index was tested according to ISO 1133; hardness according to ISO 75-1:2004 test;
3. the following table is obtained for the properties of the samples and the properties of the HIPS regrind:
and when the performance index of the sample is higher than or lower than the requirement of the table by within 5 percent, judging that the quality of the regenerated PP glass fiber material is qualified, and using the regenerated PP glass fiber material to produce products.
The production method of the regenerated PP glass fiber material comprises the following steps:
1. drying the regenerated PP glass fiber material for 1.5h at 100 ℃;
2. in the injection molding machine, 6 temperature zones are arranged from injection melting to an injection mold, the temperature of the 6 temperature zones is sequentially set to 190 ℃, 205 ℃, 200 ℃, 190 ℃ and 180 ℃ from injection melting to the injection mold, the zone for injection melting is divided into 2 sections, namely a melting plasticizing section and a pressure injection section, the melting plasticizing section corresponds to the first 5 temperature zones (190 ℃, 205 ℃, 200 ℃, 190 ℃) and the pressure injection section is finally divided into 1 temperature zone (180 ℃).
3. Conveying the dried regenerated PP glass fiber material into an injection molding machine through material pumping equipment, performing melt injection molding on the material into a mold, and respectively performing injection molding on the material into a bobbin bottom part and a handle part; wherein the injection molding temperature is between 185 ℃ and 205 ℃.
4. And carrying out ultrasonic welding on the handle piece and the spool piece at the welding power of about 2000W to form a complete finished spool product.
In this embodiment, the final bobbin product has the following detection properties:
| scheme(s) | Shrinkage (%) | Density (g/cm 3) | Tensile Strength (MPa) | Eccentricity (mm) | Weldability |
| Example 1 | 0.35 | 1.086 | 14.2 | 0.28 | Is excellent in |
| HIPS finished product | 0.61 | 1.035 | 10.6 | 0.54 | Good effect |
And after the finished product of the bobbin is manufactured, the shrinkage rate, the density, the tensile strength, the eccentricity and the weldability of the finished product of the bobbin are checked, and the quality of the finished product of the bobbin is judged to be qualified if the performance of the finished product of the bobbin reaches above the requirement or is lower than the requirement within 5%.
The second embodiment:
the regenerated PP glass fiber material for the enameled wire bobbin material is prepared from preparation raw materials, wherein the preparation raw materials comprise 67 parts by mass of PP recycled materials, 5 parts by mass of reinforcing agent barium sulfate, 5 parts by mass of toughening agent POE, 1 part by mass of No. 32 white oil, 1 part by mass of carbon black, 1 part by mass of antioxidant 168 and 30 parts by mass of two strands of alkali-free continuous glass fibers.
In the embodiment, a screw extrusion device is provided with five sections, namely a feeding section, a melting section, a rubber mixing section, a homogenizing section and a nose section in sequence from feeding to discharging, wherein the five sections of the feeding section, the melting section, the rubber mixing section, the homogenizing section and the nose section are respectively provided with 2 temperature zones, the screw extrusion device sequentially has the temperatures from the feeding section to the nose section of 170 ℃, 180 ℃, 185 ℃, 190 ℃, 180 ℃, 170 ℃, 180 ℃, 195 ℃ and 190 ℃, the feeding section corresponds to 170 ℃ and 180 ℃, the melting section corresponds to 185 ℃ and 190 ℃, the rubber mixing section corresponds to 190 ℃ and 180 ℃, the homogenizing section corresponds to 170 ℃ and 180 ℃, the nose section corresponds to 195 ℃ and 190 ℃, the feeding speed of the screw extrusion device is set to 13, the rotating speed of a main machine is set to 250r/min, the pelletizing speed is set to 350r/min, the prepared raw materials are added into the screw extrusion device and are subjected to water cooling, drawing, drying, granulating, and drying, and granulating, and then the PP glass fiber is uniformly extruded into a water-cooling and packaging machine, and is drawn into a water-cooling, and is carried out.
A test is carried out after a regenerated PP glass fiber material for an enameled wire spool material is prepared, and the process flow is as follows:
1. the method comprises the following steps of (1) sampling a regenerated PP glass fiber material according to injection molding production to prepare a sample;
2. the samples were tested as follows: the tensile strength is tested according to ISO 527-2-1996, and the tensile speed is set to be 50mm/min; the bending strength is tested according to ISO 178-2003, and the testing speed is set to be 2mm/min; the impact strength of the simply supported beam is tested according to ISO 179-1-2006; the heat distortion temperature is tested according to ISO 75-2-2004; melt index was tested according to ISO 1133; hardness according to ISO 75-1:2004 test;
3. the following table is obtained for the properties of the samples and the properties of the HIPS regrind:
and when the performance index of the sample is higher than the requirement of the table or is lower than the requirement of the table within 5 percent, judging that the quality of the regenerated PP glass fiber material is qualified, and using the regenerated PP glass fiber material for producing products.
The production method of the regenerated PP glass fiber material comprises the following steps:
1. drying the regenerated PP glass fiber material for 1.5h at 100 DEG C
2. In the injection molding machine, 6 temperature zones are arranged from injection melting to an injection mold, the temperature of the 6 temperature zones is sequentially set to 190 ℃, 205 ℃, 200 ℃, 190 ℃ and 180 ℃ from injection melting to the injection mold, the zone for injection melting is divided into 2 sections, namely a melting plasticizing section and a pressure injection section, the melting plasticizing section corresponds to the first 5 temperature zones (190 ℃, 205 ℃, 200 ℃, 190 ℃) and the pressure injection section is finally divided into 1 temperature zone (180 ℃).
3. Conveying the dried regenerated PP glass fiber material into an injection molding machine through pumping equipment, and performing melt injection molding on the PP glass fiber material into a mold to respectively perform injection molding on a bobbin bottom part and a handle part; wherein the injection molding temperature is between 185 ℃ and 205 ℃.
4. And carrying out ultrasonic welding on the handle piece and the spool piece at the welding power of about 2000W to form a complete finished spool product.
In this embodiment, the final bobbin product has the following detection properties:
| scheme(s) | Shrinkage (%) | Density (g/cm) 3 ) | Tensile Strength (MPa) | Eccentricity (mm) | Weldability |
| Example 2 | 0.45 | 1.085 | 13.6 | 0.35 | Is excellent in |
| HIPS finished product | 0.61 | 1.035 | 10.6 | 0.54 | Is good |
And after the finished product of the bobbin is manufactured, the shrinkage rate, the density, the tensile strength, the eccentricity and the weldability of the finished product of the bobbin are checked, and the quality of the finished product of the bobbin is judged to be qualified if the performance of the finished product of the bobbin reaches above the requirement or is lower than the requirement within 5%.
The third embodiment is as follows:
a regenerated PP glass fiber material for an enameled wire bobbin material is prepared from preparation raw materials, wherein the preparation raw materials comprise 67 parts by mass of PP recycled material, 5 parts by mass of reinforcing agent barium sulfate, 4 parts by mass of toughening agent SBS, 2 parts by mass of No. 42 white oil, 1 part by mass of carbon black, 1 part by mass of antioxidant 1076 and 30 parts by mass of two strands of alkali-free continuous glass fibers.
In the embodiment, a screw extrusion device is provided with five sections, namely a feeding section, a melting section, a rubber mixing section, a homogenizing section and a machine head section in sequence from feeding to discharging, wherein the five sections of the feeding section, the melting section, the rubber mixing section, the homogenizing section and the machine head section are respectively provided with 2 temperature zones, the temperature of the screw extrusion device from the feeding section to the machine head section is 170 ℃, 180 ℃, 185 ℃, 190 ℃, 180 ℃, 170 ℃, 180 ℃, 195 ℃ and 190 ℃, the feeding section corresponds to 170 ℃ and 180 ℃, the melting section corresponds to 185 ℃ and 190 ℃, the rubber mixing section corresponds to 190 ℃ and 180 ℃, the homogenizing section corresponds to 170 ℃ and 180 ℃, the machine head section corresponds to 195 ℃ and 190 ℃, the feeding speed of the screw extrusion device is set to 18r/min, the rotating speed of a main machine is set to 300r/min, the dicing speed is set to 350r/min, the prepared raw materials are added into the screw extrusion device and are subjected to water cooling, mixed, dried, and packaged into a water cooling and pelletizing machine, and the PP glass fiber is uniformly extruded, and the prepared materials are subjected to be packaged into a water-cooling and dried.
A test is carried out after a regenerated PP glass fiber material for an enameled wire spool material is prepared, and the process flow is as follows:
1. the method comprises the following steps of (1) sampling a regenerated PP glass fiber material according to injection molding production to prepare a sample;
2. the samples were tested as follows: the tensile strength was measured according to ISO 527-2-1996, with the tensile speed set at 50mm/min; the bending strength is tested according to ISO 178-2003, and the testing speed is set to be 2mm/min; the impact strength of the simply supported beam is tested according to ISO 179-1-2006; the heat distortion temperature is tested according to ISO 75-2-2004; melt index was tested according to ISO 1133; hardness according to ISO 75-1:2004 test;
3. the properties of the samples and the properties of the HIPS regrind are given in the following table:
and when the performance index of the sample is higher than the requirement of the table or is lower than the requirement of the table within 5 percent, judging that the quality of the regenerated PP glass fiber material is qualified, and using the regenerated PP glass fiber material for producing products.
The production method of the regenerated PP glass fiber material comprises the following steps:
1. drying the regenerated PP glass fiber material for 1.5h at 100 ℃;
2. in an injection molding machine, 6 temperature zones are arranged from injection melting to an injection mold, the temperature in the 6 temperature zones is sequentially set to 190 ℃, 205 ℃, 200 ℃, 190 ℃ and 180 ℃ from injection melting to the injection mold, the zones for injection melting are divided into 2 sections, namely a melting plasticizing section and a pressure injection section, the melting plasticizing section corresponds to the first 5 temperature zones (190 ℃, 205 ℃, 200 ℃, 190 ℃) and the pressure injection section is finally 1 temperature zone (180 ℃).
3. Conveying the dried regenerated PP glass fiber material into an injection molding machine through material pumping equipment, performing melt injection molding on the material into a mold, and respectively performing injection molding on the material into a bobbin bottom part and a handle part; wherein the injection molding temperature is between 185 ℃ and 205 ℃.
4. And carrying out ultrasonic welding on the handle piece and the spool piece at the welding power of about 2000W to form a complete finished spool product.
In this embodiment, the final bobbin product has the following detection properties:
| scheme(s) | Shrinkage (%) | Density (g/cm 3) | Tensile strength(MPa) | Eccentricity (mm) | Weldability |
| Example 3 | 0.4 | 1.087 | 13.4 | 0.32 | Is excellent in |
| HIPS finished product | 0.61 | 1.035 | 10.6 | 0.54 | Good effect |
Further, after the finished bobbin product is manufactured, the shrinkage rate, the density, the tensile strength, the eccentricity and the weldability of the finished bobbin product are checked, and the quality of the finished bobbin product is judged to be qualified if the performance of the finished bobbin product is more than or less than 5% of the requirement.
The fourth embodiment is as follows:
a regenerated PP glass fiber material for an enameled wire bobbin material is prepared from preparation raw materials, wherein the preparation raw materials comprise 67 parts by mass of PP recycled material, 5 parts by mass of reinforcing agent calcium carbonate, 4 parts by mass of toughening agent SBS, 1 part by mass of white oil, 2 parts by mass of carbon black, 1 part by mass of antioxidant 168 and 30 parts by mass of two strands of alkali-free continuous glass fibers.
In the embodiment, a screw extrusion device is provided with five sections, namely a feeding section, a melting section, a rubber mixing section, a homogenizing section and a nose section in sequence from feeding to discharging, wherein the five sections of the feeding section, the melting section, the rubber mixing section, the homogenizing section and the nose section are respectively provided with 2 temperature zones, the screw extrusion device sequentially comprises 170 ℃, 180 ℃, 185 ℃, 190 ℃, 180 ℃, 170 ℃, 180 ℃, 195 ℃ and 190 ℃ from the feeding section to the nose section, the feeding section corresponds to 170 ℃ and 180 ℃, the melting section corresponds to 185 ℃ and 190 ℃, the rubber mixing section corresponds to 190 ℃ and 180 ℃, the homogenizing section corresponds to 170 ℃ and 180 ℃, the nose section corresponds to 195 ℃ and 190 ℃, the feeding speed of the screw extrusion device is set to 18r/min, the rotating speed of a main machine is set to 300r/min, the pelletizing speed is set to 350r/min, the prepared raw materials are added into the screw extrusion device and are uniformly mixed with the feeding section, the rubber mixing section, the homogenizing section and the nose section, the rotating speed of the main machine is set to 300r/min, the pelletizing speed is set to 350r/min, the PP glass fiber is uniformly extruded, the PP fiber is extruded and the PP fiber is drawn and is extruded into a water-cooled and is drawn into a pelletizing machine, and is dried, and is drawn into a pelletizing machine, and is carried out the PP material, and is uniformly, and is drawn into a pelletizing process of a pelletizing machine, and is carried out the PP material, and is carried out the PP is drawn, and is carried out the PP.
A test is carried out after a regenerated PP glass fiber material for an enameled wire spool material is prepared, and the process flow is as follows:
1. the method comprises the following steps of (1) sampling a regenerated PP glass fiber material according to injection molding production to prepare a sample;
2. the samples were tested as follows: the tensile strength is tested according to ISO 527-2-1996, and the tensile speed is set to be 50mm/min; the bending strength is tested according to ISO 178-2003, and the testing speed is set to be 2mm/min; the impact strength of the simply supported beam is tested according to ISO 179-1-2006; the heat distortion temperature is tested according to ISO 75-2-2004; melt index was tested according to ISO 1133; hardness according to ISO 75-1:2004 test;
3. the following table is obtained for the properties of the samples and the properties of the HIPS regrind:
and when the performance index of the sample is higher than the requirement of the table or is lower than the requirement of the table within 5 percent, judging that the quality of the regenerated PP glass fiber material is qualified, and using the regenerated PP glass fiber material for producing products.
The production method of the regenerated PP glass fiber material comprises the following steps:
1. drying the regenerated PP glass fiber material for 1.5h at 100 DEG C
2. In the injection molding machine, 6 temperature zones are arranged from injection melting to an injection mold, the temperature of the 6 temperature zones is sequentially set to 190 ℃, 205 ℃, 200 ℃, 190 ℃ and 180 ℃ from injection melting to the injection mold, the zone for injection melting is divided into 2 sections, namely a melting plasticizing section and a pressure injection section, the melting plasticizing section corresponds to the first 5 temperature zones (190 ℃, 205 ℃, 200 ℃, 190 ℃) and the pressure injection section is finally divided into 1 temperature zone (180 ℃).
3. Conveying the dried regenerated PP glass fiber material into an injection molding machine through material pumping equipment, performing melt injection molding on the material into a mold, and respectively performing injection molding on the material into a bobbin bottom part and a handle part; wherein the injection molding temperature is between 185 ℃ and 205 ℃.
4. And (4) carrying out ultrasonic welding on the handle part and the bobbin part at the welding power of about 2000W to form a complete finished bobbin product.
In this embodiment, the final bobbin product has the following test properties:
| scheme(s) | Shrinkage (%) | Density (g/cm) 3 ) | Tensile Strength (MPa) | Eccentricity (mm) | Weldability |
| Example 4 | 0.42 | 1.084 | 13.8 | 0.38 | Is good |
| HIPS finished product | 0.61 | 1.035 | 10.6 | 0.54 | Good effect |
And further, after the finished bobbin product is manufactured, the shrinkage rate, the density, the tensile strength, the eccentricity and the weldability of the finished bobbin product are checked randomly, and the quality of the finished bobbin product is judged to be qualified if the performance of the finished bobbin product is more than or less than 5% of the requirement.
The main functions of the invention are as follows:
1. the mechanical properties such as hardness of the spool can be improved by using the regenerated PP glass fiber material to manufacture the spool finished product, and the stability of the spool quality is ensured;
2. the finished spool product made of the recycled PP glass fiber material is not easy to warp and deform (has concave interior), is not easy to break and has good batch stability;
3. the finished product of the bobbin made of the recycled PP glass fiber material has low shrinkage rate and low eccentricity, and the technical problem that the finished product of the bobbin floats up and down in the using process is solved.
In summary, after reading the present disclosure, those skilled in the art can make various other corresponding changes without creative mental work according to the technical solutions and concepts of the present disclosure, and all of them are within the protection scope of the present disclosure.
Claims (10)
1. The regenerated PP glass fiber material for the enameled wire bobbin material is characterized by being prepared from preparation raw materials, wherein the preparation raw materials comprise PP recycled materials, reinforcing agents, toughening agents, white oil, carbon black, antioxidants and glass fibers.
2. The recycled PP glass fiber material for the enameled wire shaft material according to claim 1, wherein the mass fractions of the components in the raw materials are as follows: 67 parts by mass of the PP recycled material, 5 parts by mass of the reinforcing agent, 4 or 5 parts by mass of the toughening agent, 1 or 2 parts by mass of the white oil, 1 or 2 parts by mass of the carbon black, 1 part by mass of the antioxidant and 30 parts by mass of the glass fiber.
3. The recycled PP-fiberglass material for enameled wire shaft material as claimed in claim 1, wherein the toughening agent is POE or SBS.
4. The recycled PP glass fiber material for enameled wire shaft material as claimed in claim 1, wherein the reinforcing agent is barium sulfate, talc or calcium carbonate.
5. The recycled PP glass fiber material for enamelled wire shaft material in accordance with claim 1, wherein the glass fiber is alkali-free continuous glass fiber.
6. The recycled PP glass fiber material for enameled wire shaft material as claimed in claim 1, wherein the antioxidant is antioxidant 168, antioxidant 1010 or antioxidant 1076.
7. The recycled PP glass fiber material for the enameled wire shaft material, according to claim 1, wherein the white oil is No. 42 white oil or No. 32 white oil.
8. The preparation method of the recycled PP glass fiber material for the enameled wire shaft material according to any one of claims 1 to 7, wherein the preparation raw materials are added into a screw extrusion device and uniformly mixed to prepare the recycled PP glass fiber material.
9. The method for preparing recycled PP glass fiber material for enameled wire shaft material according to claim 8, wherein the temperature of each temperature zone of the screw extrusion equipment is set to 170-195 ℃.
10. The method for preparing recycled PP glass fiber material for enameled wire shaft material as claimed in claim 8, wherein the feeding rate of the screw extrusion equipment is set to be 13r/min to 18r/min, the main machine rotation speed is 250r/min to 300r/min, and the pelletizing rate is 350r/min.
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